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| author | Chuck Lever <chuck.lever@oracle.com> | 2021-08-03 22:55:58 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2021-08-20 20:50:33 +0300 |
| commit | 3a1261805940d0ff1dbbb9c705dddbc018c0423f (patch) | |
| tree | 577dc9ebe7e94b839dbe615b3e368dafc2211c31 | |
| parent | a4ae308143961bf688e1c8a62f6604e62b491120 (diff) | |
| download | linux-3a1261805940d0ff1dbbb9c705dddbc018c0423f.tar.xz | |
SUNRPC: Server-side disconnect injection
Disconnect injection stress-tests the ability for both client and
server implementations to behave resiliently in the face of network
instability.
A file called /sys/kernel/debug/fail_sunrpc/ignore-server-disconnect
enables administrators to turn off server-side disconnect injection
while allowing other types of sunrpc errors to be injected. The
default setting is that server-side disconnect injection is enabled
(ignore=false).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
| -rw-r--r-- | net/sunrpc/debugfs.c | 3 | ||||
| -rw-r--r-- | net/sunrpc/fail.h | 2 | ||||
| -rw-r--r-- | net/sunrpc/svc.c | 8 |
3 files changed, 13 insertions, 0 deletions
diff --git a/net/sunrpc/debugfs.c b/net/sunrpc/debugfs.c index 04e453ad3508..827bf3a28178 100644 --- a/net/sunrpc/debugfs.c +++ b/net/sunrpc/debugfs.c @@ -259,6 +259,9 @@ static void fail_sunrpc_init(void) debugfs_create_bool("ignore-client-disconnect", S_IFREG | 0600, dir, &fail_sunrpc.ignore_client_disconnect); + + debugfs_create_bool("ignore-server-disconnect", S_IFREG | 0600, dir, + &fail_sunrpc.ignore_server_disconnect); } #else static void fail_sunrpc_init(void) diff --git a/net/sunrpc/fail.h b/net/sunrpc/fail.h index 62c1b9fd59e2..69dc30cc44b8 100644 --- a/net/sunrpc/fail.h +++ b/net/sunrpc/fail.h @@ -14,6 +14,8 @@ struct fail_sunrpc_attr { struct fault_attr attr; bool ignore_client_disconnect; + + bool ignore_server_disconnect; }; extern struct fail_sunrpc_attr fail_sunrpc; diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index 5aa263326b6a..bfcbaf7b3822 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -31,6 +31,8 @@ #include <trace/events/sunrpc.h> +#include "fail.h" + #define RPCDBG_FACILITY RPCDBG_SVCDSP static void svc_unregister(const struct svc_serv *serv, struct net *net); @@ -1524,6 +1526,12 @@ svc_process(struct svc_rqst *rqstp) struct svc_serv *serv = rqstp->rq_server; u32 dir; +#if IS_ENABLED(CONFIG_FAIL_SUNRPC) + if (!fail_sunrpc.ignore_server_disconnect && + should_fail(&fail_sunrpc.attr, 1)) + svc_xprt_deferred_close(rqstp->rq_xprt); +#endif + /* * Setup response xdr_buf. * Initially it has just one page |